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https://issues.apache.org/jira/browse/MIME4J-327?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17829606#comment-17829606
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Yoni Gibbs commented on MIME4J-327:
-----------------------------------

Hey, thanks for the reply! Unfortunately the new version doesn't seem to fix 
it. I've put up a repo where you can replicate the issue, in case it's of use: 
[https://github.com/yonigibbs/mime4j-korean.] Just run {{./gradlew test}} in 
there. Let me know if there's anything I can do to help.

> Korean characters in eml file's "To" header not parsed correctly when not 
> base64-encoded
> ----------------------------------------------------------------------------------------
>
>                 Key: MIME4J-327
>                 URL: https://issues.apache.org/jira/browse/MIME4J-327
>             Project: James Mime4j
>          Issue Type: Bug
>    Affects Versions: 0.8.10
>         Environment: JDK 17, MacOS (also tried on Linux: same result)
>            Reporter: Yoni Gibbs
>            Priority: Major
>         Attachments: base64-encoded.eml, not-base64-encoded.eml
>
>
> We are trying to parse an eml file where one of the recipients has a name 
> containing Korean characters. If the {{To:}} header is base64-encoded, it's 
> fine; if it's not base64-encoded, it fails to be read the name correctly.
> Say we have an eml file with this header:
> {{    To: =?UTF-8?B?7Iuc7ZeY?= <koreant...@example.com>}}
> This parses fine.
> But with the following header the name is parsed incorrectly:
> {{    To: "시험" <koreant...@example.com>}}
> We am using {{{}org.apache.james:apache-mime4j:0.8.10{}}}, and this is some 
> sample Java code to that produces the issue:
> {{    var is = 
> Main.class.getClassLoader().getResourceAsStream("not-base64-encoded.eml");}}
> {{    var parsed = new DefaultMessageBuilder().parseMessage(is);}}
> {{    var to = ((Mailbox) parsed.getTo().get(0)).getName();}}
> {{    assertEquals("시험", to);}}
> Note that to generate an eml with the two different possible headers above we 
> are using {{{}org.eclipse.angus:angus-mail:2.0.2{}}}. The default behaviour 
> there is to generate the base64-encoded header. However if you set the 
> {{mail.mime.allowutf8}} property in the SMTP session to true then it creates 
> the not-base64-encoded header, which causes the problem for mime4j.
> Does this look like a bug in mime4j? Or is there something we're not doing 
> correctly?
> Thanks in advance!



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